>> he knows what it means to want something more for your kids and grand kids. barack knows the american dream because he's lived it. that's the man i see in those quiet moments late at night. hunched over his desk, pouring over the letters people have sent him. i see the concern in his eyes and i hear the determination in his voice as he tells me you won't believe what these folks are going through, michelle, it's not right. we've got to keep working to fix this. we've got so much more to do. >> by just one measure, social media, that speech struck a cord. 28,000 mentions on twitter every minute. by contrast, mitt romney's speech last week got about half as many mentions during his speech. 14,000. and that brings us to tonight.